Cost Effective Coverage Extension in 802.16j Mobile Multihop Relay Networks

WiMAX (IEEE 802.16) has emerged as a promising radio access technology for providing high speed broadband connectivity to subscribers over large geographic regions. New enhancements allow deployments of relay stations (RSs) that can extend the coverage of the base station (BS), increase cell capacity, or both. In this paper, we focus on deploying RSs for the purpose of coverage extension. We propose a simple scheduling scheme for serving the subscriber stations (SSs) in a fair manner and evaluate the performance of WiMAX networks with relays under this scheduling scheme. Through simulation and numerical analysis, we make several fundamental observations about cost-effective coverage in such networks.

[1]  Jeffrey G. Andrews,et al.  Fundamentals of WiMAX: Understanding Broadband Wireless Networking (Prentice Hall Communications Engineering and Emerging Technologies Series) , 2007 .

[2]  Saleem A. Kassam,et al.  Finite-state Markov model for Rayleigh fading channels , 1999, IEEE Trans. Commun..

[3]  Lawrence Joel Greenstein,et al.  Channel Models for Fixed Wireless Applications Date Submitted , 2001 .

[4]  G. J. Foschini,et al.  Digital communications over fading radio channels , 1983, The Bell System Technical Journal.

[5]  Jeffrey G. Andrews,et al.  Fundamentals of WiMAX: Understanding Broadband Wireless Networking , 2007 .

[6]  Lisa Zhang,et al.  Scheduling Algorithms for Multicarrier Wireless Data Systems , 2007, IEEE/ACM Transactions on Networking.

[7]  Vinko Erceg,et al.  Channel Models for Fixed Wireless Applications , 2001 .

[8]  S. Goebbels,et al.  Dimensioning cellular multihop WiMAX networks , 2007, 2007 IEEE Mobile WiMAX Symposium.

[9]  Vivek P. Mhatre,et al.  WiMAX relay networks: opportunistic scheduling to exploit multiuser diversity and frequency selectivity , 2008, MobiCom '08.

[10]  Lili Qiu,et al.  Impact of Interference on Multi-Hop Wireless Network Performance , 2003, MobiCom '03.

[11]  Halim Yanikomeroglu,et al.  Range extension without capacity penalty in cellular networks with digital fixed relays , 2004, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[12]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[13]  Mythri Hunukumbure,et al.  Dimensioning and Cost Analysis of Multihop Relay-Enabled WiMAX Networks , 2008 .